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Results for “construct validity”

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PubMed2006

Measuring sensory processing patterns of older Chinese people: psychometric validation of the adult sensory profile.

The Adult Sensory Profile (ASP) evaluates the sensory experiences of adults in the categories of auditory, visual, taste/smell, touch, movement, and activity level. It generates four sensory processing patterns including low registration, sensation seeking, sensory sensitivity, and sensation avoiding. This study examined the psychometric properties of the Chinese version of ASP (ASP-CV) for older Hong Kong Chinese adults. Ninety-six participants with normal cognitive functioning and 33 participants with dementia were recruited. All participants were involved in the investigation of internal consistency and construct validity. One sub-sample from each group was selected for test-retest reliability and inter-rater reliability respectively. The ASP-CV demonstrated excellent inter-rater reliability and test-retest reliability (r = 0.91-0.99 and 0.76-0.88 respectively), and satisfactory internal consistency (alpha = 0.58-0.72). The construct validity of ASP-CV was supported by the known-groups method, in which participants with dementia differed significantly from their healthy counterparts in the patterns of 'low registration' (F(1, 127) = 9.69, p = 0.002), 'sensory sensitivity' (F(1, 127) = 4.63, p = 0.033), and 'sensation avoiding' (F(1, 127) = 15.87, p < 0.001). In conclusion, ASP-CV is reliable and valid to measure sensory processing functions of older Hong Kong Chinese people. Further studies are suggested to examine the factor structure of and the equivalence of self-report and proxy report of ASP-CV.

Activities of Daily Living↗

PubMed1986

The Ascription of Responsibility Questionnaire: development and empirical extensions.

This article describes the development of the Ascription of Responsibility Questionnaire (ARQ). In Study 1, item analytic and factor analytic procedures were used, with a data set based on 251 subjects, to reduce an initial pool of 92 Likert Scale items to 41 items that were structured by four clear, independent ascription tendencies, or ways in which people ascribe responsibility. In Study 2, this factorial structure was confirmed on a sample of 403 subjects. From the responses in both studies, reliabilities of the four ascription of responsibility scales were assessed. On the basis of a pooled sample, norms were developed. Construct validity assessment was begun by correlating scores, in both studies, on the ascription of responsibility scales with a number of conceptually related standardized and semistandardized scales, as well as with a number of demographic and personological variables that might be related to attributional and attitudinal tendencies. These and further construct validation results obtained by comparative analytic methods are presented and discussed.

Journal Article↗

PubMed1994

[Cognition-correlation indices of gender schema: tests of validity].

Four-hundred and seventy-seven subjects evaluated a set of traits and behaviors in terms of how masculine and feminine they were and in terms of how well they represented their real and ideal self-images. Within-individual correlation coefficients between these evaluations were proposed as measures of psychological gender schemata, because they would represent the degree of matching between the subjects' gender-image and ideal/real self-images of gender-related attributes. The present study aims at examining the construct validity of these measures, by testing them to psychological variables that are known to reflect gender identity. The individual difference variables used as criteria were (a) satisfaction with one's own sex, (b) general happiness, (c) self-esteem (d) gender-conflict, and (e) school and occupational achievement need. Correlations between the gender-schema indices and the criteria variables supported the construct validity of those measures. Advantages of the present measurement over the conventional simple trait approach, such as BSRI, or PAQ are discussed.

Achievement↗

PubMed1998

COOP Charts in French: translation and preliminary data on instrument properties.

This paper describes the procedure used to translate the COOP Charts into French and provides preliminary information on the instrument's acceptability, reliability and validity. The charts were translated in several steps: seven initial translations were combined into a first pilot version, which was then tested for acceptability, clarity and alternative wordings in two convenience samples taken from the general population (n = 53). The modified version was then reviewed by a lay panel and another translator and submitted by mail to 209 congress participants to test several construct validity hypotheses through known-groups comparisons. A panel of public health professionals discussed the content validity of the charts. Finally, test-retest reliability and concurrent validity with SF-36 Health Survey scores were examined among 65 patients with end-stage renal disease. The translation process identified a wide variability in translation options for several items. The acceptability of the charts was excellent. The test-retest correlations ranged from 0.60 to 0.87. Content validity appeared to be appropriate, except for the chart on 'social support', which combines the questions of need and availability of social support. The utility of illustrations was questioned by some respondents: many claimed not to have used the illustrations in selecting their response, while others found them to be not expressive enough. Most preliminary tests of construct validity were consistent with theory. This French translation of the COOP Charts appears to be ready for more extensive testing in the intended target population of ambulatory patients.

Adolescent↗

PubMed2003

Interactive voice response to assess residents' laparoscopic skills: an instrument validation study.

OBJECTIVE: The study was undertaken to evaluate the psychometric properties of the Interactive Voice Response (IVR) instrument to assess laparoscopic surgical skills of residents. STUDY DESIGN: Surgical competence of obstetric-gynecologic residents at the University of Ottawa (Canada) was evaluated after observed performance of skills. Three questions addressing general domains of surgical skill were rated per surgery using a 5-point Likert scale: overall, 993 surgical ratings were made by 29 residents and 13 faculty preceptors. RESULTS: With use of a generalizability study, a minimum of 12 preceptor ratings (G=0.80) are needed to obtain reliable measures of residents' surgical skills. Item analysis indicated that the three items on the instrument were highly correlated (Cronbach alpha=.92). Elements of construct validity were evident for diagnostic and simple laparoscopic procedures. CONCLUSION: The IVR instrument can be a valid and reliable measure of residents' surgical skills. The IVR ratings functioned as a global rating scale, capturing overall elements of surgical skills. The ratings on the IVR tool had construct validity with improved performance with increased surgical training and experience.

Clinical Competence↗

PubMed2004

Assessing quality of life in the elderly: a direct comparison of the EQ-5D and AQoL.

As more research is undertaken on the elderly, accurately assessing changes in their quality of life becomes increasingly important. Generic instruments are the most popular method to assess quality of life, and one of the most widely used is the EQ-5D. However, the range of dimensions, sensitivity of scales and completion rates have been raised as concerns when using this measure with the elderly. The AQoL is a newer instrument which offers greater richness in dimensions of health covered, and potentially offers greater sensitivity to changes in quality of life. This paper presents the results of a 'head-to-head' comparison of the EQ-5D and AQoL in terms of practicality, construct validity, agreement (of absolute scores and their change over time) and sensitivity to change, as part of a randomised controlled trial in the elderly. Poor agreement was found between both the absolute scores from each instrument and change in scores over time. Although the AQoL appeared to have more favourable construct validity, the EQ-5D was easier to administer, had a higher completion rate, and appeared more sensitive to change. We conclude that the AQoL is probably less well suited to measuring health status in a very elderly population than the EQ-5D.

Aged↗

PubMed2001

Development of a self-directed learning readiness scale for nursing education.

Self-directed learning is a method of instruction used increasingly in adult education. A scale was developed in response to a need for a valid and reliable instrument to measure self-directed learning readiness. Such a scale will allow nurse educators to diagnose students' attitudes, abilities and personality characteristics, necessary for self-directed learning. This study was undertaken in two stages. In the first, the Delphi technique utilizing a panel of 11 nurse educator experts was used to assess the content and construct validity of a number of items perceived to reflect self-directed learning readiness. Each panel member was asked to independently rate the relevance of each item on a Likert scale. The second stage involved the administration of the questionnaire to a convenience sample of 201 undergraduate nursing students. The questionnaire was analysed using principal components factor analysis with varimax rotation, Chronbach's coefficient alpha, and item-to-total correlations to measure the scale's construct validity, internal consistency (reliability), and unidimensionality, respectively.The resulting self-directed learning readiness scale appears homogeneous and valid. The scale will assist nurse educators in the diagnosis of student learning needs, in order for the educator to implement teaching strategies that will best suit the students. Furthermore the development of this scale will provide valuable data for curriculum development.

Attitude of Health Personnel↗

PubMed2004

Validation of the Dutch cystic fibrosis questionnaire (CFQ) in adolescents and adults.

BACKGROUND: This study assesses the reliability and validity of the Dutch version of a disease-specific measure of health-related quality of life (HRQOL) for adolescents and adults with CF (CFQ-14+). The 47-item CFQ-14+ covers nine domains, three symptom scales and one health perception scale. METHODS: To assess psychometric characteristics of the CFQ-14+, cross-sectional (homogeneity, discriminative and construct validity) and test-retest designs were used. Eighty-four adolescents and adults with CF (mean age: 21.4 years, range 14.0-46.5 years) and a wide range of lung function (mean FEV1: 59.9% predicted, range 15-121%) completed the questionnaire during a routine visit. RESULTS: Internal consistency was acceptable for most domains of the CFQ-14+ (alpha = 0.43-0.92) and test-retest reliability was high for all domain scores (0.72-0.98). Several domains of the CFQ-14+ were able to differentiate between individuals with varying disease severity and between nourished and malnourished patients. Construct validity of the questionnaire was fair, with moderate to strong correlation between physically orientated domains and pulmonary function (rs = 0.36-0.62). CONCLUSION: The results demonstrate that the CFQ-14+ questionnaire is a well-validated measure of HRQOL assessment in adolescents and adults with CF.

Adaptation, Physiological↗

PubMed1980

Construction and validation of an equivalency examination for an MLT/MT career mobility curriculum.

A career mobility program in medical technology, recently developed at the University of Illinois Medical Center, Peoria, utilizes equivalency examinations to recognize professional competencies achieved by a medical laboratory technology graduate with an associate degree toward completion of a bacclaureate degree in medical technology. Four criterion-referenced examinations in clinical chemistry, clinical microbiology, hematology, and blood bank-serology were constructed by 30 medical laboratory technician (MLT) and medical technology educators from Illinois community colleges and universities in 1976-1977. A description of the development of these exams, the process of criterion referencing, the administration of the exams for norming, and the utilization of the exams by applicants of the career mobility program is presented.

Career Mobility↗

PubMed2006

The Psychiatric Out-Patient Experiences Questionnaire (POPEQ): data quality, reliability and validity in patients attending 90 Norwegian clinics.

The aim of this study was to develop and evaluate the Psychiatric Out-Patient Experiences Questionnaire (POPEQ). The instrument was developed following a literature review, patient interviews and pre-testing of questionnaire items. The POPEQ was administered as part of a postal survey of 15,422 adult outpatients attending Norwegian clinics; 6677 (43.3%) patients responded to the questionnaire. Items had low levels of missing data. Factor analysis showed that 11 widely applicable items contribute to a measure of overall experiences. Sub-dimensions include clinician interaction (six items) information (two items) and outcomes (three items). Item-total correlations ranged from 0.5 to 0.8. Cronbach's alpha and test-retest reliability estimates exceeded the criterion of 0.7; the majority were over 0.8 and total scores over 0.9. Construct validity was supported by the results of 128 tests. The POPEQ includes important aspects of patient experience for psychiatric outpatients and has excellent evidence for reliability and construct validity. The instrument is recommended for the measurement of psychiatric outpatient experiences.

Adult↗

PubMed2001

Structured assessment of minor surgical skills (SAMSS) for family medicine residents.

PURPOSE: To develop a valid and reliable examination to assess the technical proficiency of family medicine residents' performance of minor surgical office procedures. METHOD: A multi-station OSCE-style examination using bench-model simulations of minor surgical procedures was developed. Participants were a randomly selected group of 33 family medicine residents (PGY-1 = 16, PGY-2 = 17) and 14 senior surgical residents who functioned as a validation group. Examiners were qualified surgeons and family physicians who used both checklists and global rating scales to score the participants' performances. RESULTS: When family medicine residents were evaluated by family physicians, interstation reliabilities were .29 for checklists and .42 for global ratings. When family medicine residents were evaluated by surgeons, the reliabilities were .53 for checklists and .75 for global ratings. Interrater reliability, measured as a correlation for total examination scores, was .97. Mean scores on the examination were 60%, 64%, and 87% for PGY-1 family medicine, PGY-2 family medicine, and surgery residents, respectively. The difference in scores between family medicine and surgery residents was significant (p < .001), providing evidence of construct validity. CONCLUSION: A new examination developed for assessing family medicine residents' skills with minor surgical office procedures is reliable and has evidence for construct validity. The examination has low reliability when family physicians serve as examiners, but moderate reliability when surgeons are the evaluators.

Ambulatory Surgical Procedures↗

PubMed2006

Reliability and validity of the Asthma Trigger Inventory applied to a pediatric population.

OBJECTIVE: To test the reliability and validity of the Asthma Trigger Inventory (ATI) applied to a pediatric population. METHOD: Children with asthma (N = 272, 56% male, age 7-17) and their primary caregivers answered together an asthma trigger inventory, ATI (Ritz, Steptoe, Bobb, Harris, & Edwards, 2006) developed for adults. Cronbach's alpha, principal component analysis (PCA), hierarchical regression, and correlations of the ATI subscales with skin prick tests, psychological questionnaires, and disease severity were used to assess the psychometric properties of the ATI. RESULTS: The ATI subscales demonstrated excellent reliability regardless of gender, race, socioeconomic status (SES), or age. PCA confirmed and replicated the theoretical structure of the ATI. Hierarchical multiple regressions illuminated the association of ATI subscales with demographics and asthma history. Evidence in support of construct validity was found in associations between ratings of triggering and disease severity and asthma-related quality of life (PAQLQ). Criterion validity for allergy triggering was partially supported by correlations between ATI animal allergens subscale and the cat dander skin prick test, and construct validity for emotional triggering by associations between the emotional trigger subscale score and the anxiety (STAIC) and depression (CDI, CDI-P, CDRS-R, and CBCL-I) scores. CONCLUSION: The ATI holds promise as a reliable, valid, and useful clinical and research tool to assess the type and degree of asthma triggering in a pediatric population (age 7-17) of varied gender, race, and SES.

Asthma↗

PubMed2001

Al-Ain community psychiatric survey IV: socio-cultural changes (traditionality-liberalism) and prevalence of psychiatric disorders.

UNLABELLED: BACKGROUND This study was set to explore the relationship between socio-cultural change and psychopathology. METHOD: A representative sample (n = 1,394) of Al-Ain adult population had their psychopathology assessed with the Composite International Diagnostic Interview and other self-reported questionnaires, while the socio-cultural change was assessed with the modified version of the Socio-cultural Change Questionnaire (ScCQ). The reliability and construct validity of the modified ScCQ were assessed. The overall Tradition Index, attitudinal and behavioural indices of the sample were estimated. Association between socio-cultural change and psychopathology was also evaluated. RESULT: The reliability of the modified ScCQ was found to be moderate (alpha Cronbach 0.66) and the hypothesis regarding its construct validity was confirmed. Mean traditional index was found to be 0.61 +/- 0.14.Young, highly educated, skilled, and female subjects were found to be significantly less conservative and their scores on traditional index deviated significantly from overall mean. Less traditional people were also found to have a significantly increased rate of ICD-10 psychiatric disorder and higher scores on psychopathology measures especially among females. Although females showed significantly more modern attitude, there were no significant sex differences in the expressed behaviour as measured by the behavioural Tradition Index. CONCLUSION: The findings of this study suggest that the prevalence of psychiatric disorder varies significantly according to the extent to which subjects adhere to traditional values.

Adult↗

PubMed2005

A new curriculum for hysteroscopy training as demonstrated by an objective structured assessment of technical skills (OSATS).

OBJECTIVE: The purpose of this study was to develop an effective curriculum to teach hysteroscopy, as well as to develop an objective assessment instrument (OSATS). STUDY DESIGN: All 24 residents in our training program attended a 3-hour hysteroscopy curriculum in each of 3 years. Each year after the curriculum, an OSATS was administered consisting of an assembly and operative task. Each task was evaluated with a task-specific checklist and a previously validated global assessment form. Twenty-four residents from an outside institution served as controls. All residents were examined by blinded and unblinded examiners. RESULTS: The reliability coefficient was .7857 for the checklist and .9763 for the global scale. Interrater reliability for the checklist was .7478 and ranged from .4222 to .9329 for the global instruments. Evaluation of construct validity revealed that the junior residents at both locations did significantly worse on the checklist and global scale than the senior residents for all 3 years of the study (P < .001). Those residents provided the curriculum did significantly better on both the checklist and the global scale than the resident controls with a mean of 45% versus 63% for the checklist and 18.3 versus 24.9 for the global score. (P = .001 checklist, P = .007 global scale). CONCLUSION: This curriculum is an effective way to impart knowledge and skill in the assembly and use of the operative hysteroscope. The checklist developed for this OSATS has excellent reliability and construct validity.

Clinical Competence↗

PubMed2006

Psychometric evaluation of the Brief Cancer Impact Assessment among breast cancer survivors.

OBJECTIVES: The increasing number of cancer survivors brings greater attention to the biopsychosocial impact of surviving cancer. Instruments exist that measure quality of life (QOL), symptoms, and specific types of functioning after cancer; however, a reliable and valid assessment of the perceived impact of cancer (IOC) on the life plans and activities of cancer survivors has been missing. This study evaluated the psychometric properties of the 16-item Brief Cancer Impact Assessment (BCIA). METHODS: Factor analysis with Promax oblique rotation established the factor structure of the BCIA in 783 ethnically diverse breast cancer survivors, >or=2 years after diagnosis. Construct validity was assessed by comparing factor-based scale means by demographic and treatment characteristics, and correlating scales with psychosocial and health-related QOL scales. RESULTS: Factor analysis revealed four factors measuring the IOC on caregiving and finances, exercise and diet behaviors, social and emotional functioning, and religiosity. Scale scores differed by demographic and treatment characteristics according to expectations, and the pattern of correlations with psychosocial and health-related QOL generally supported the construct validity of the scales. CONCLUSION: Including the BCIA with measures of QOL, symptoms, and functioning will allow researchers to gain a more comprehensive assessment of the biopsychosocial IOC in survivors.

Adult↗

PubMed2000

The rating scale preference measure as an evaluative measure in systemic lupus erythematosus.

Preference measures may be useful tools to assess patients' overall health-related quality of life. We studied the validity and sensitivity to change of the rating scale preference measure in patients with systemic lupus erythematosus (SLE), and compared its properties with those of the patient global assessment of SLE activity, in a prospective longitudinal observational study of changes in the symptoms and clinical disease activity of 23 patients. Patients were assessed every two weeks for up to 40 weeks. Construct validity was assessed by the strength of correlations between changes over time in the rating scale preference measure and patient global assessment and changes in the physician global assessment, Systemic Lupus Activity Measure (SLAM), European Consensus Lupus Activity Measure (ECLAM), the British Isles Lupus Assessment Group index (BILAG), and Systemic Lupus Erythematosus Disease Activity Index (SLEDAI). Changes in the rating scale were more highly correlated with changes in each of these standards than were changes in the patient global assessment, demonstrating the construct validity of this measure. Sensitivity to change was measured using the two-week interval of greatest change in either the physician global assessment or the SLE activity measures as standards. The rating scale preference measure was less sensitive to change than the patient global assessment when tested against four different standards. The sensitivity to change of the rating scale was less than one-half that of the patient global assessment when either the SLAM or ECLAM was used as the standard. Although these results support the validity of the rating scale as a measure of health-related quality of life in patients with SLE, its limited sensitivity to change may make it less attractive as an endpoint measure in clinical trials.

Adult↗

PubMed2003

The surgical error examination is a novel method for objective technical knowledge assessment.

BACKGROUND: Objective analysis of surgical skill is necessary. A novel method of assessment using simple error analysis in synthetic models is examined for construct validity. METHODS: Two examination protocols were devised using synthetic models. These contained either a purpose made error or were representative of good surgical practice. Protocol one contained models of skin closure and minor operations. Protocol two in addition more complex procedures. Face validity was established by the approval of senior surgeons. Junior surgeons were recruited to undertake the assessment. A p value of less than 0.05 was deemed to be significant. RESULTS: Eighty-nine surgeons were recruited. Both protocol one and two were able to discriminate between groups at statistically significant levels. CONCLUSIONS: Construct validity has been established by showing that error analysis is able to distinguish surgeons with varying levels of experience.

Clinical Competence↗

PubMed1996

[A disease substitution index: construction and validation].

Empirical research dealing with health and illness often has the problem that the data sets contain a variety of health related variables but no variables abou the appearance of diseases and complaints. In order to solve this problem a disease substitution index (DSI) based on data of the German Socio-Economic Panel (GSOEP, 1985) and the national health survey conducted in the framework of the German Cardiovascular Prevention Study (GCP, 1984-1986) was constructed. Consisting of the variables "medical attendance", "hospital attendance" "existence of chronical diseases" the DSI shows statistically significant association with a series of diseases and complaints. These findings indicate that the DSI can be used to substitute diseases and/or complaints in datasets with the mentioned variables but no informations about diseases or complaints.

Adult↗